/*
 * #%L
 * %%
 * Copyright (C) 2015 Trustsystems Desenvolvimento de Sistemas, LTDA.
 * %%
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * 3. Neither the name of the Trustsystems Desenvolvimento de Sistemas, LTDA. nor the names of its contributors
 *    may be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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package com.tompai.elfinder.support.content.detect;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;

import org.apache.tika.Tika;

/**
 * NIO file type detector implementation that uses Tika API.
 *
 * @author Thiago Gutenberg Carvalho da Costa
 */
public class NIO2FileTypeDetector extends java.nio.file.spi.FileTypeDetector implements Detector {

	private final Tika tika = new Tika();

	/**
	 * Gets mime type from the given input stream.
	 *
	 * @return the mime type.
	 * @throws IOException if the stream can not be read.
	 */
	@Override
	public String detect(InputStream inputStream) throws IOException {
		return tika.detect(inputStream);
	}

	/**
	 * Gets mime type from the given file path.
	 *
	 * @return the mime type.
	 * @throws IOException if the file can not be read.
	 */
	@Override
	public String detect(Path path) throws IOException {
		if (Files.isDirectory(path)) {
			return "directory";
		}
		return tika.detect(path);
	}

	/**
	 * Gets mime type from the given file path.
	 *
	 * @return the mime type.
	 * @throws IOException if the file can not be read.
	 */
	@Override
	public String probeContentType(Path path) throws IOException {
		return detect(path);
	}

}
